From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933951Ab0EZIpW (ORCPT ); Wed, 26 May 2010 04:45:22 -0400 Received: from mail-ww0-f46.google.com ([74.125.82.46]:50452 "EHLO mail-ww0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932536Ab0EZIpQ (ORCPT ); Wed, 26 May 2010 04:45:16 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=sender:date:from:to:subject:message-id:mime-version:content-type :content-disposition:user-agent; b=QQHiogWSav8ijKjksMfuF9pUkwUh+NhAyFAXnoQXwOZMlYFUfA8bRNiuJYzsKYgZ5v sz8eh++xztXaVJjqCuFiQk+yQtc4Yg5hEazWZqwkRn6q+Hx7kQvUROPXiUhGQhOkTJzq UCwwJzy4pc8onJhAPgsx5jE/eci3PlIknLtts= Date: Wed, 26 May 2010 10:48:11 +0200 From: Richard Zidlicky To: linux-kernel@vger.kernel.org Subject: 2.6.34 hard lock ppp/do_tty_hangup, regression Message-ID: <20100526084811.GA5890@linux-m68k.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, I am getting a perfectly reproducible hard lock when killing a ppp connection that is in promiscuous mode, this USB device: Bus 005 Device 003: ID 19d2:0063 ONDA Communication S.p.A. In my case I run "tcptrack -i ppp0" in a terminal window and as soon as I kill pppd the machine freezes hard. Is this a known problem? I had some non-fatal lockups in 2.6.30* that my be related so I have attached the messages here: May 16 22:19:18 localhost kernel: [ 0.000000] Linux version 2.6.33.2v1 (rz@rz) (gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC) ) #3 SMP Thu Apr 8 14:27:58 CEST 2010 .... .... .... .... May 19 00:44:36 localhost pppd[20619]: Terminating on signal 2 May 19 00:44:36 localhost pppd[20619]: Connect time 318.2 minutes. May 19 00:44:36 localhost pppd[20619]: Sent 5172200 bytes, received 83501101 bytes. May 19 00:44:36 localhost kernel: [81980.706871] device ppp0 left promiscuous mode May 19 00:44:42 localhost pppd[20619]: Connection terminated. May 19 00:44:51 localhost pppd[20619]: ioctl(TIOCSETD, N_TTY): Interrupted system call (line 562) May 19 00:48:16 localhost kernel: [82200.358010] INFO: task events/0:9 blocked for more than 120 seconds. May 19 00:48:16 localhost kernel: [82200.358014] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:48:16 localhost kernel: [82200.358017] events/0 D 00004a96 0 9 2 0x00000000 May 19 00:48:16 localhost kernel: [82200.358022] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4 May 19 00:48:16 localhost kernel: [82200.358029] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000 May 19 00:48:16 localhost kernel: [82200.358036] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96 May 19 00:48:16 localhost kernel: [82200.358044] Call Trace: May 19 00:48:16 localhost kernel: [82200.358053] [] schedule_timeout+0x16/0x9a May 19 00:48:16 localhost kernel: [82200.358059] [] ? trace_hardirqs_off_caller+0x18/0x91 May 19 00:48:16 localhost kernel: [82200.358063] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:48:16 localhost kernel: [82200.358066] [] ? trace_hardirqs_on+0xb/0xd May 19 00:48:16 localhost kernel: [82200.358069] [] __down_common+0x76/0xad May 19 00:48:16 localhost kernel: [82200.358072] [] __down+0x12/0x14 May 19 00:48:16 localhost kernel: [82200.358076] [] down+0x22/0x2f May 19 00:48:16 localhost kernel: [82200.358082] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 19 00:48:16 localhost kernel: [82200.358086] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 19 00:48:16 localhost kernel: [82200.358091] [] tty_ldisc_hangup+0x64/0x19c May 19 00:48:16 localhost kernel: [82200.358095] [] do_tty_hangup+0xe4/0x2d7 May 19 00:48:16 localhost kernel: [82200.358098] [] worker_thread+0x1a1/0x272 May 19 00:48:16 localhost kernel: [82200.358102] [] ? worker_thread+0x157/0x272 May 19 00:48:16 localhost kernel: [82200.358105] [] ? do_tty_hangup+0x0/0x2d7 May 19 00:48:16 localhost kernel: [82200.358108] [] ? autoremove_wake_function+0x0/0x33 May 19 00:48:16 localhost kernel: [82200.358112] [] ? worker_thread+0x0/0x272 May 19 00:48:16 localhost kernel: [82200.358115] [] kthread+0x61/0x66 May 19 00:48:16 localhost kernel: [82200.358118] [] ? kthread+0x0/0x66 May 19 00:48:16 localhost kernel: [82200.358122] [] kernel_thread_helper+0x6/0x1a May 19 00:48:16 localhost kernel: [82200.358124] INFO: lockdep is turned off. May 19 00:48:16 localhost kernel: [82200.358170] INFO: task X:3712 blocked for more than 120 seconds. May 19 00:48:16 localhost kernel: [82200.358171] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:48:16 localhost kernel: [82200.358174] X D 00004a96 0 3712 3694 0x00400084 May 19 00:48:16 localhost kernel: [82200.358178] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000 May 19 00:48:16 localhost kernel: [82200.358185] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000 May 19 00:48:16 localhost kernel: [82200.358192] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc May 19 00:48:16 localhost kernel: [82200.358199] Call Trace: May 19 00:48:16 localhost kernel: [82200.358203] [] schedule_timeout+0x16/0x9a May 19 00:48:16 localhost kernel: [82200.358207] [] ? wait_for_common+0x31/0xec May 19 00:48:16 localhost kernel: [82200.358211] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:48:16 localhost kernel: [82200.358214] [] ? trace_hardirqs_on+0xb/0xd May 19 00:48:16 localhost kernel: [82200.358217] [] wait_for_common+0xa7/0xec May 19 00:48:16 localhost kernel: [82200.358221] [] ? default_wake_function+0x0/0xd May 19 00:48:16 localhost kernel: [82200.358225] [] wait_for_completion+0x12/0x14 May 19 00:48:16 localhost kernel: [82200.358228] [] flush_work+0xa1/0xb2 May 19 00:48:16 localhost kernel: [82200.358231] [] ? wq_barrier_func+0x0/0xd May 19 00:48:16 localhost kernel: [82200.358234] [] flush_delayed_work+0x40/0x43 May 19 00:48:16 localhost kernel: [82200.358238] [] tty_flush_to_ldisc+0xd/0xf May 19 00:48:16 localhost kernel: [82200.358241] [] n_tty_poll+0x54/0x127 May 19 00:48:16 localhost kernel: [82200.358244] [] ? n_tty_poll+0x0/0x127 May 19 00:48:16 localhost kernel: [82200.358247] [] tty_poll+0x4c/0x62 May 19 00:48:16 localhost kernel: [82200.358252] [] do_select+0x3a8/0x5cf May 19 00:48:16 localhost kernel: [82200.358256] [] ? update_curr+0x177/0x17f May 19 00:48:16 localhost kernel: [82200.358260] [] ? __pollwait+0x0/0xac May 19 00:48:16 localhost kernel: [82200.358263] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358266] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358269] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358272] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358274] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358277] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358280] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358283] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358286] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358289] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358292] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358295] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358298] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358301] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358304] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358307] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358309] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358312] [] ? pollwake+0x0/0x63 May 19 00:48:16 localhost kernel: [82200.358316] [] core_sys_select+0x14e/0x1ce May 19 00:48:16 localhost kernel: [82200.358321] [] ? might_fault+0x47/0x81 May 19 00:48:16 localhost kernel: [82200.358324] [] ? do_vfs_ioctl+0x49b/0x4d5 May 19 00:48:16 localhost kernel: [82200.358327] [] ? ktime_get_ts+0xd0/0xda May 19 00:48:16 localhost kernel: [82200.358330] [] sys_select+0x6e/0x8c May 19 00:48:16 localhost kernel: [82200.358334] [] syscall_call+0x7/0xb May 19 00:48:16 localhost kernel: [82200.358336] INFO: lockdep is turned off. May 19 00:50:16 localhost kernel: [82320.358012] INFO: task events/0:9 blocked for more than 120 seconds. May 19 00:50:16 localhost kernel: [82320.358016] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:50:16 localhost kernel: [82320.358019] events/0 D 00004a96 0 9 2 0x00000000 May 19 00:50:16 localhost kernel: [82320.358024] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4 May 19 00:50:16 localhost kernel: [82320.358032] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000 May 19 00:50:16 localhost kernel: [82320.358039] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96 May 19 00:50:16 localhost kernel: [82320.358046] Call Trace: May 19 00:50:16 localhost kernel: [82320.358056] [] schedule_timeout+0x16/0x9a May 19 00:50:16 localhost kernel: [82320.358061] [] ? trace_hardirqs_off_caller+0x18/0x91 May 19 00:50:16 localhost kernel: [82320.358065] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:50:16 localhost kernel: [82320.358068] [] ? trace_hardirqs_on+0xb/0xd May 19 00:50:16 localhost kernel: [82320.358071] [] __down_common+0x76/0xad May 19 00:50:16 localhost kernel: [82320.358074] [] __down+0x12/0x14 May 19 00:50:16 localhost kernel: [82320.358079] [] down+0x22/0x2f May 19 00:50:16 localhost kernel: [82320.358085] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 19 00:50:16 localhost kernel: [82320.358088] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 19 00:50:16 localhost kernel: [82320.358093] [] tty_ldisc_hangup+0x64/0x19c May 19 00:50:16 localhost kernel: [82320.358097] [] do_tty_hangup+0xe4/0x2d7 May 19 00:50:16 localhost kernel: [82320.358101] [] worker_thread+0x1a1/0x272 May 19 00:50:16 localhost kernel: [82320.358104] [] ? worker_thread+0x157/0x272 May 19 00:50:16 localhost kernel: [82320.358107] [] ? do_tty_hangup+0x0/0x2d7 May 19 00:50:16 localhost kernel: [82320.358111] [] ? autoremove_wake_function+0x0/0x33 May 19 00:50:16 localhost kernel: [82320.358114] [] ? worker_thread+0x0/0x272 May 19 00:50:16 localhost kernel: [82320.358117] [] kthread+0x61/0x66 May 19 00:50:16 localhost kernel: [82320.358120] [] ? kthread+0x0/0x66 May 19 00:50:16 localhost kernel: [82320.358124] [] kernel_thread_helper+0x6/0x1a May 19 00:50:16 localhost kernel: [82320.358126] INFO: lockdep is turned off. May 19 00:50:16 localhost kernel: [82320.358171] INFO: task X:3712 blocked for more than 120 seconds. May 19 00:50:16 localhost kernel: [82320.358173] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:50:16 localhost kernel: [82320.358175] X D 00004a96 0 3712 3694 0x00400084 May 19 00:50:16 localhost kernel: [82320.358180] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000 May 19 00:50:16 localhost kernel: [82320.358187] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000 May 19 00:50:16 localhost kernel: [82320.358193] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc May 19 00:50:16 localhost kernel: [82320.358201] Call Trace: May 19 00:50:16 localhost kernel: [82320.358205] [] schedule_timeout+0x16/0x9a May 19 00:50:16 localhost kernel: [82320.358208] [] ? wait_for_common+0x31/0xec May 19 00:50:16 localhost kernel: [82320.358212] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:50:16 localhost kernel: [82320.358215] [] ? trace_hardirqs_on+0xb/0xd May 19 00:50:16 localhost kernel: [82320.358218] [] wait_for_common+0xa7/0xec May 19 00:50:16 localhost kernel: [82320.358222] [] ? default_wake_function+0x0/0xd May 19 00:50:16 localhost kernel: [82320.358226] [] wait_for_completion+0x12/0x14 May 19 00:50:16 localhost kernel: [82320.358229] [] flush_work+0xa1/0xb2 May 19 00:50:16 localhost kernel: [82320.358232] [] ? wq_barrier_func+0x0/0xd May 19 00:50:16 localhost kernel: [82320.358235] [] flush_delayed_work+0x40/0x43 May 19 00:50:16 localhost kernel: [82320.358239] [] tty_flush_to_ldisc+0xd/0xf May 19 00:50:16 localhost kernel: [82320.358242] [] n_tty_poll+0x54/0x127 May 19 00:50:16 localhost kernel: [82320.358245] [] ? n_tty_poll+0x0/0x127 May 19 00:50:16 localhost kernel: [82320.358248] [] tty_poll+0x4c/0x62 May 19 00:50:16 localhost kernel: [82320.358252] [] do_select+0x3a8/0x5cf May 19 00:50:16 localhost kernel: [82320.358256] [] ? update_curr+0x177/0x17f May 19 00:50:16 localhost kernel: [82320.358260] [] ? __pollwait+0x0/0xac May 19 00:50:16 localhost kernel: [82320.358263] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358266] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358269] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358272] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358275] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358278] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358280] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358283] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358286] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358289] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358292] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358295] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358298] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358301] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358304] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358306] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358309] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358312] [] ? pollwake+0x0/0x63 May 19 00:50:16 localhost kernel: [82320.358315] [] core_sys_select+0x14e/0x1ce May 19 00:50:16 localhost kernel: [82320.358321] [] ? might_fault+0x47/0x81 May 19 00:50:16 localhost kernel: [82320.358324] [] ? do_vfs_ioctl+0x49b/0x4d5 May 19 00:50:16 localhost kernel: [82320.358327] [] ? ktime_get_ts+0xd0/0xda May 19 00:50:16 localhost kernel: [82320.358330] [] sys_select+0x6e/0x8c May 19 00:50:16 localhost kernel: [82320.358334] [] syscall_call+0x7/0xb May 19 00:50:16 localhost kernel: [82320.358335] INFO: lockdep is turned off. May 19 00:52:16 localhost kernel: [82440.358012] INFO: task events/0:9 blocked for more than 120 seconds. May 19 00:52:16 localhost kernel: [82440.358017] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:52:16 localhost kernel: [82440.358019] events/0 D 00004a96 0 9 2 0x00000000 May 19 00:52:16 localhost kernel: [82440.358024] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4 May 19 00:52:16 localhost kernel: [82440.358032] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000 May 19 00:52:16 localhost kernel: [82440.358039] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96 May 19 00:52:16 localhost kernel: [82440.358046] Call Trace: May 19 00:52:16 localhost kernel: [82440.358056] [] schedule_timeout+0x16/0x9a May 19 00:52:16 localhost kernel: [82440.358061] [] ? trace_hardirqs_off_caller+0x18/0x91 May 19 00:52:16 localhost kernel: [82440.358065] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:52:16 localhost kernel: [82440.358068] [] ? trace_hardirqs_on+0xb/0xd May 19 00:52:16 localhost kernel: [82440.358071] [] __down_common+0x76/0xad May 19 00:52:16 localhost kernel: [82440.358074] [] __down+0x12/0x14 May 19 00:52:16 localhost kernel: [82440.358079] [] down+0x22/0x2f May 19 00:52:16 localhost kernel: [82440.358084] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 19 00:52:16 localhost kernel: [82440.358088] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 19 00:52:16 localhost kernel: [82440.358093] [] tty_ldisc_hangup+0x64/0x19c May 19 00:52:16 localhost kernel: [82440.358096] [] do_tty_hangup+0xe4/0x2d7 May 19 00:52:16 localhost kernel: [82440.358100] [] worker_thread+0x1a1/0x272 May 19 00:52:16 localhost kernel: [82440.358104] [] ? worker_thread+0x157/0x272 May 19 00:52:16 localhost kernel: [82440.358107] [] ? do_tty_hangup+0x0/0x2d7 May 19 00:52:16 localhost kernel: [82440.358110] [] ? autoremove_wake_function+0x0/0x33 May 19 00:52:16 localhost kernel: [82440.358113] [] ? worker_thread+0x0/0x272 May 19 00:52:16 localhost kernel: [82440.358117] [] kthread+0x61/0x66 May 19 00:52:16 localhost kernel: [82440.358120] [] ? kthread+0x0/0x66 May 19 00:52:16 localhost kernel: [82440.358124] [] kernel_thread_helper+0x6/0x1a May 19 00:52:16 localhost kernel: [82440.358126] INFO: lockdep is turned off. May 19 00:52:16 localhost kernel: [82440.358171] INFO: task X:3712 blocked for more than 120 seconds. May 19 00:52:16 localhost kernel: [82440.358173] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:52:16 localhost kernel: [82440.358175] X D 00004a96 0 3712 3694 0x00400084 May 19 00:52:16 localhost kernel: [82440.358179] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000 May 19 00:52:16 localhost kernel: [82440.358187] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000 May 19 00:52:16 localhost kernel: [82440.358193] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc May 19 00:52:16 localhost kernel: [82440.358200] Call Trace: May 19 00:52:16 localhost kernel: [82440.358205] [] schedule_timeout+0x16/0x9a May 19 00:52:16 localhost kernel: [82440.358208] [] ? wait_for_common+0x31/0xec May 19 00:52:16 localhost kernel: [82440.358212] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:52:16 localhost kernel: [82440.358215] [] ? trace_hardirqs_on+0xb/0xd May 19 00:52:16 localhost kernel: [82440.358218] [] wait_for_common+0xa7/0xec May 19 00:52:16 localhost kernel: [82440.358223] [] ? default_wake_function+0x0/0xd May 19 00:52:16 localhost kernel: [82440.358226] [] wait_for_completion+0x12/0x14 May 19 00:52:16 localhost kernel: [82440.358229] [] flush_work+0xa1/0xb2 May 19 00:52:16 localhost kernel: [82440.358232] [] ? wq_barrier_func+0x0/0xd May 19 00:52:16 localhost kernel: [82440.358236] [] flush_delayed_work+0x40/0x43 May 19 00:52:16 localhost kernel: [82440.358239] [] tty_flush_to_ldisc+0xd/0xf May 19 00:52:16 localhost kernel: [82440.358242] [] n_tty_poll+0x54/0x127 May 19 00:52:16 localhost kernel: [82440.358245] [] ? n_tty_poll+0x0/0x127 May 19 00:52:16 localhost kernel: [82440.358248] [] tty_poll+0x4c/0x62 May 19 00:52:16 localhost kernel: [82440.358252] [] do_select+0x3a8/0x5cf May 19 00:52:16 localhost kernel: [82440.358257] [] ? update_curr+0x177/0x17f May 19 00:52:16 localhost kernel: [82440.358261] [] ? __pollwait+0x0/0xac May 19 00:52:16 localhost kernel: [82440.358264] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358267] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358270] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358273] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358276] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358279] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358281] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358284] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358287] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358290] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358293] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358296] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358299] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358302] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358305] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358307] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358310] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358313] [] ? pollwake+0x0/0x63 May 19 00:52:16 localhost kernel: [82440.358316] [] core_sys_select+0x14e/0x1ce May 19 00:52:16 localhost kernel: [82440.358322] [] ? might_fault+0x47/0x81 May 19 00:52:16 localhost kernel: [82440.358325] [] ? do_vfs_ioctl+0x49b/0x4d5 May 19 00:52:16 localhost kernel: [82440.358328] [] ? ktime_get_ts+0xd0/0xda May 19 00:52:16 localhost kernel: [82440.358331] [] sys_select+0x6e/0x8c May 19 00:52:16 localhost kernel: [82440.358335] [] syscall_call+0x7/0xb May 19 00:52:16 localhost kernel: [82440.358337] INFO: lockdep is turned off. May 19 00:54:16 localhost kernel: [82560.358012] INFO: task events/0:9 blocked for more than 120 seconds. May 19 00:54:16 localhost kernel: [82560.358016] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:54:16 localhost kernel: [82560.358018] events/0 D 00004a96 0 9 2 0x00000000 May 19 00:54:16 localhost kernel: [82560.358023] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4 May 19 00:54:16 localhost kernel: [82560.358031] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000 May 19 00:54:16 localhost kernel: [82560.358038] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96 May 19 00:54:16 localhost kernel: [82560.358045] Call Trace: May 19 00:54:16 localhost kernel: [82560.358055] [] schedule_timeout+0x16/0x9a May 19 00:54:16 localhost kernel: [82560.358060] [] ? trace_hardirqs_off_caller+0x18/0x91 May 19 00:54:16 localhost kernel: [82560.358064] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:54:16 localhost kernel: [82560.358067] [] ? trace_hardirqs_on+0xb/0xd May 19 00:54:16 localhost kernel: [82560.358070] [] __down_common+0x76/0xad May 19 00:54:16 localhost kernel: [82560.358074] [] __down+0x12/0x14 May 19 00:54:16 localhost kernel: [82560.358078] [] down+0x22/0x2f May 19 00:54:16 localhost kernel: [82560.358083] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 19 00:54:16 localhost kernel: [82560.358087] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 19 00:54:16 localhost kernel: [82560.358092] [] tty_ldisc_hangup+0x64/0x19c May 19 00:54:16 localhost kernel: [82560.358095] [] do_tty_hangup+0xe4/0x2d7 May 19 00:54:16 localhost kernel: [82560.358099] [] worker_thread+0x1a1/0x272 May 19 00:54:16 localhost kernel: [82560.358102] [] ? worker_thread+0x157/0x272 May 19 00:54:16 localhost kernel: [82560.358105] [] ? do_tty_hangup+0x0/0x2d7 May 19 00:54:16 localhost kernel: [82560.358109] [] ? autoremove_wake_function+0x0/0x33 May 19 00:54:16 localhost kernel: [82560.358112] [] ? worker_thread+0x0/0x272 May 19 00:54:16 localhost kernel: [82560.358116] [] kthread+0x61/0x66 May 19 00:54:16 localhost kernel: [82560.358119] [] ? kthread+0x0/0x66 May 19 00:54:16 localhost kernel: [82560.358123] [] kernel_thread_helper+0x6/0x1a May 19 00:54:16 localhost kernel: [82560.358125] INFO: lockdep is turned off. May 19 00:54:16 localhost kernel: [82560.358169] INFO: task X:3712 blocked for more than 120 seconds. May 19 00:54:16 localhost kernel: [82560.358171] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 00:54:16 localhost kernel: [82560.358173] X D 00004a96 0 3712 3694 0x00400084 May 19 00:54:16 localhost kernel: [82560.358177] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000 May 19 00:54:16 localhost kernel: [82560.358184] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000 May 19 00:54:16 localhost kernel: [82560.358191] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc May 19 00:54:16 localhost kernel: [82560.358198] Call Trace: May 19 00:54:16 localhost kernel: [82560.358202] [] schedule_timeout+0x16/0x9a May 19 00:54:16 localhost kernel: [82560.358206] [] ? wait_for_common+0x31/0xec May 19 00:54:16 localhost kernel: [82560.358209] [] ? trace_hardirqs_on_caller+0x18/0x12e May 19 00:54:16 localhost kernel: [82560.358213] [] ? trace_hardirqs_on+0xb/0xd May 19 00:54:16 localhost kernel: [82560.358216] [] wait_for_common+0xa7/0xec May 19 00:54:16 localhost kernel: [82560.358220] [] ? default_wake_function+0x0/0xd May 19 00:54:16 localhost kernel: [82560.358224] [] wait_for_completion+0x12/0x14 May 19 00:54:16 localhost kernel: [82560.358227] [] flush_work+0xa1/0xb2 May 19 00:54:16 localhost kernel: [82560.358230] [] ? wq_barrier_func+0x0/0xd May 19 00:54:16 localhost kernel: [82560.358233] [] flush_delayed_work+0x40/0x43 May 19 00:54:16 localhost kernel: [82560.358237] [] tty_flush_to_ldisc+0xd/0xf May 19 00:54:16 localhost kernel: [82560.358240] [] n_tty_poll+0x54/0x127 May 19 00:54:16 localhost kernel: [82560.358243] [] ? n_tty_poll+0x0/0x127 May 19 00:54:16 localhost kernel: [82560.358246] [] tty_poll+0x4c/0x62 May 19 00:54:16 localhost kernel: [82560.358250] [] do_select+0x3a8/0x5cf May 19 00:54:16 localhost kernel: [82560.358254] [] ? update_curr+0x177/0x17f May 19 00:54:16 localhost kernel: [82560.358258] [] ? __pollwait+0x0/0xac May 19 00:54:16 localhost kernel: [82560.358261] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358264] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358267] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358270] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358273] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358276] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358279] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358281] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358284] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358287] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358290] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358293] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358296] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358299] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358302] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358305] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358308] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358310] [] ? pollwake+0x0/0x63 May 19 00:54:16 localhost kernel: [82560.358314] [] core_sys_select+0x14e/0x1ce May 19 00:54:16 localhost kernel: [82560.358319] [] ? might_fault+0x47/0x81 May 19 00:54:16 localhost kernel: [82560.358322] [] ? do_vfs_ioctl+0x49b/0x4d5 May 19 00:54:16 localhost kernel: [82560.358325] [] ? ktime_get_ts+0xd0/0xda May 19 00:54:16 localhost kernel: [82560.358329] [] sys_select+0x6e/0x8c May 19 00:54:16 localhost kernel: [82560.358332] [] syscall_call+0x7/0xb May 19 00:54:16 localhost kernel: [82560.358334] INFO: lockdep is turned off. and another interesting case: May 19 19:36:08 localhost kernel: [ 0.000000] Linux version 2.6.33.2v1 (rz@rz) (gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC) ) #3 SMP Thu Apr 8 14:27:58 CEST 2010 .... .... .... May 20 00:23:54 localhost kernel: [17520.343017] INFO: task events/1:10 blocked for more than 120 seconds. May 20 00:23:54 localhost kernel: [17520.343020] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:23:54 localhost kernel: [17520.343023] events/1 D 00000fc0 0 10 2 0x00000000 May 20 00:23:54 localhost kernel: [17520.343027] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8 May 20 00:23:54 localhost kernel: [17520.343034] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001 May 20 00:23:54 localhost kernel: [17520.343041] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576 May 20 00:23:54 localhost kernel: [17520.343047] Call Trace: May 20 00:23:54 localhost kernel: [17520.343057] [] ? __lock_acquire+0xa67/0xbb7 May 20 00:23:54 localhost kernel: [17520.343060] [] ? __lock_acquire+0xaeb/0xbb7 May 20 00:23:54 localhost kernel: [17520.343066] [] schedule_timeout+0x16/0x9a May 20 00:23:54 localhost kernel: [17520.343069] [] ? mark_held_locks+0x43/0x5b May 20 00:23:54 localhost kernel: [17520.343072] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:23:54 localhost kernel: [17520.343076] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:23:54 localhost kernel: [17520.343079] [] ? trace_hardirqs_on+0xb/0xd May 20 00:23:54 localhost kernel: [17520.343082] [] __down_common+0x76/0xad May 20 00:23:54 localhost kernel: [17520.343085] [] __down+0x12/0x14 May 20 00:23:54 localhost kernel: [17520.343089] [] down+0x22/0x2f May 20 00:23:54 localhost kernel: [17520.343094] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 20 00:23:54 localhost kernel: [17520.343097] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 20 00:23:54 localhost kernel: [17520.343102] [] tty_ldisc_hangup+0x64/0x19c May 20 00:23:54 localhost kernel: [17520.343106] [] do_tty_hangup+0xe4/0x2d7 May 20 00:23:54 localhost kernel: [17520.343110] [] worker_thread+0x1a1/0x272 May 20 00:23:54 localhost kernel: [17520.343113] [] ? worker_thread+0x157/0x272 May 20 00:23:54 localhost kernel: [17520.343116] [] ? do_tty_hangup+0x0/0x2d7 May 20 00:23:54 localhost kernel: [17520.343119] [] ? autoremove_wake_function+0x0/0x33 May 20 00:23:54 localhost kernel: [17520.343122] [] ? worker_thread+0x0/0x272 May 20 00:23:54 localhost kernel: [17520.343125] [] kthread+0x61/0x66 May 20 00:23:54 localhost kernel: [17520.343137] [] ? kthread+0x0/0x66 May 20 00:23:54 localhost kernel: [17520.343141] [] kernel_thread_helper+0x6/0x1a May 20 00:23:54 localhost kernel: [17520.343144] 2 locks held by events/1/10: May 20 00:23:54 localhost kernel: [17520.343146] #0: (events){+.+.+.}, at: [] worker_thread+0x157/0x272 May 20 00:23:54 localhost kernel: [17520.343153] #1: ((&tty->hangup_work)#2){+.+...}, at: [] worker_thread+0x157/0x272 May 20 00:23:54 localhost kernel: [17520.343207] INFO: task X:3782 blocked for more than 120 seconds. May 20 00:23:54 localhost kernel: [17520.343208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:23:54 localhost kernel: [17520.343211] X D 00000fc4 0 3782 3764 0x00400084 May 20 00:23:54 localhost kernel: [17520.343215] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230 May 20 00:23:54 localhost kernel: [17520.343225] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000 May 20 00:23:54 localhost kernel: [17520.343234] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230 May 20 00:23:54 localhost kernel: [17520.343243] Call Trace: May 20 00:23:54 localhost kernel: [17520.343248] [] schedule_timeout+0x16/0x9a May 20 00:23:54 localhost kernel: [17520.343251] [] ? wait_for_common+0x31/0xec May 20 00:23:54 localhost kernel: [17520.343255] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:23:54 localhost kernel: [17520.343258] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:23:54 localhost kernel: [17520.343262] [] ? trace_hardirqs_on+0xb/0xd May 20 00:23:54 localhost kernel: [17520.343265] [] wait_for_common+0xa7/0xec May 20 00:23:54 localhost kernel: [17520.343270] [] ? default_wake_function+0x0/0xd May 20 00:23:54 localhost kernel: [17520.343273] [] wait_for_completion+0x12/0x14 May 20 00:23:54 localhost kernel: [17520.343277] [] flush_work+0xa1/0xb2 May 20 00:23:54 localhost kernel: [17520.343280] [] ? wq_barrier_func+0x0/0xd May 20 00:23:54 localhost kernel: [17520.343283] [] flush_delayed_work+0x40/0x43 May 20 00:23:54 localhost kernel: [17520.343287] [] tty_flush_to_ldisc+0xd/0xf May 20 00:23:54 localhost kernel: [17520.343290] [] n_tty_poll+0x54/0x127 May 20 00:23:54 localhost kernel: [17520.343294] [] ? n_tty_poll+0x0/0x127 May 20 00:23:54 localhost kernel: [17520.343297] [] tty_poll+0x4c/0x62 May 20 00:23:54 localhost kernel: [17520.343301] [] do_select+0x3a8/0x5cf May 20 00:23:54 localhost kernel: [17520.343305] [] ? __pollwait+0x0/0xac May 20 00:23:54 localhost kernel: [17520.343309] [] ? pollwake+0x0/0x63 May 20 00:23:54 localhost kernel: [17520.343312] [] ? pollwake+0x0/0x63 May 20 00:23:54 localhost kernel: [17520.343315] [] ? pollwake+0x0/0x63 May 20 00:23:54 localhost kernel: [17520.343318] [] ? pollwake+0x0/0x63 May 20 00:23:54 localhost kernel: [17520.343321] [] ? pollwake+0x0/0x63 May 20 00:23:54 localhost kernel: [17520.343325] [] ? trace_hardirqs_off+0xb/0xd May 20 00:23:54 localhost kernel: [17520.343328] [] ? _raw_spin_unlock_irqrestore+0x38/0x4c May 20 00:23:54 localhost kernel: [17520.343332] [] ? try_to_wake_up+0x31f/0x32a May 20 00:23:54 localhost kernel: [17520.343335] [] ? register_lock_class+0x17/0x2a4 May 20 00:23:54 localhost kernel: [17520.343339] [] ? mark_lock+0x1e/0x1ea May 20 00:23:54 localhost kernel: [17520.343342] [] ? mark_lock+0x1e/0x1ea May 20 00:23:54 localhost kernel: [17520.343345] [] ? mark_lock+0x1e/0x1ea May 20 00:23:54 localhost kernel: [17520.343349] [] ? __lock_acquire+0x374/0xbb7 May 20 00:23:54 localhost kernel: [17520.343353] [] ? lock_release_non_nested+0x84/0x1db May 20 00:23:54 localhost kernel: [17520.343357] [] ? might_fault+0x47/0x81 May 20 00:23:54 localhost kernel: [17520.343361] [] ? might_fault+0x47/0x81 May 20 00:23:54 localhost kernel: [17520.343364] [] ? might_fault+0x7c/0x81 May 20 00:23:54 localhost kernel: [17520.343369] [] ? _copy_from_user+0x2d/0x106 May 20 00:23:54 localhost kernel: [17520.343373] [] ? copy_from_user+0x8/0xa May 20 00:23:54 localhost kernel: [17520.343376] [] core_sys_select+0x14e/0x1ce May 20 00:23:54 localhost kernel: [17520.343380] [] ? might_fault+0x47/0x81 May 20 00:23:54 localhost kernel: [17520.343384] [] ? ktime_get_ts+0xd0/0xda May 20 00:23:54 localhost kernel: [17520.343387] [] sys_select+0x6e/0x8c May 20 00:23:54 localhost kernel: [17520.343391] [] syscall_call+0x7/0xb May 20 00:23:54 localhost kernel: [17520.343393] no locks held by X/3782. May 20 00:25:54 localhost kernel: [17640.343015] INFO: task events/1:10 blocked for more than 120 seconds. May 20 00:25:54 localhost kernel: [17640.343018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:25:54 localhost kernel: [17640.343021] events/1 D 00000fc0 0 10 2 0x00000000 May 20 00:25:54 localhost kernel: [17640.343025] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8 May 20 00:25:54 localhost kernel: [17640.343032] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001 May 20 00:25:54 localhost kernel: [17640.343039] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576 May 20 00:25:54 localhost kernel: [17640.343045] Call Trace: May 20 00:25:54 localhost kernel: [17640.343055] [] ? __lock_acquire+0xa67/0xbb7 May 20 00:25:54 localhost kernel: [17640.343058] [] ? __lock_acquire+0xaeb/0xbb7 May 20 00:25:54 localhost kernel: [17640.343064] [] schedule_timeout+0x16/0x9a May 20 00:25:54 localhost kernel: [17640.343067] [] ? mark_held_locks+0x43/0x5b May 20 00:25:54 localhost kernel: [17640.343071] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:25:54 localhost kernel: [17640.343074] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:25:54 localhost kernel: [17640.343077] [] ? trace_hardirqs_on+0xb/0xd May 20 00:25:54 localhost kernel: [17640.343080] [] __down_common+0x76/0xad May 20 00:25:54 localhost kernel: [17640.343084] [] __down+0x12/0x14 May 20 00:25:54 localhost kernel: [17640.343087] [] down+0x22/0x2f May 20 00:25:54 localhost kernel: [17640.343092] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 20 00:25:54 localhost kernel: [17640.343096] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 20 00:25:54 localhost kernel: [17640.343101] [] tty_ldisc_hangup+0x64/0x19c May 20 00:25:54 localhost kernel: [17640.343104] [] do_tty_hangup+0xe4/0x2d7 May 20 00:25:54 localhost kernel: [17640.343108] [] worker_thread+0x1a1/0x272 May 20 00:25:54 localhost kernel: [17640.343111] [] ? worker_thread+0x157/0x272 May 20 00:25:54 localhost kernel: [17640.343114] [] ? do_tty_hangup+0x0/0x2d7 May 20 00:25:54 localhost kernel: [17640.343118] [] ? autoremove_wake_function+0x0/0x33 May 20 00:25:54 localhost kernel: [17640.343121] [] ? worker_thread+0x0/0x272 May 20 00:25:54 localhost kernel: [17640.343124] [] kthread+0x61/0x66 May 20 00:25:54 localhost kernel: [17640.343135] [] ? kthread+0x0/0x66 May 20 00:25:54 localhost kernel: [17640.343140] [] kernel_thread_helper+0x6/0x1a May 20 00:25:54 localhost kernel: [17640.343143] 2 locks held by events/1/10: May 20 00:25:54 localhost kernel: [17640.343145] #0: (events){+.+.+.}, at: [] worker_thread+0x157/0x272 May 20 00:25:54 localhost kernel: [17640.343152] #1: ((&tty->hangup_work)#2){+.+...}, at: [] worker_thread+0x157/0x272 May 20 00:25:54 localhost kernel: [17640.343206] INFO: task X:3782 blocked for more than 120 seconds. May 20 00:25:54 localhost kernel: [17640.343208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:25:54 localhost kernel: [17640.343210] X D 00000fc4 0 3782 3764 0x00400084 May 20 00:25:54 localhost kernel: [17640.343215] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230 May 20 00:25:54 localhost kernel: [17640.343224] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000 May 20 00:25:54 localhost kernel: [17640.343233] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230 May 20 00:25:54 localhost kernel: [17640.343242] Call Trace: May 20 00:25:54 localhost kernel: [17640.343247] [] schedule_timeout+0x16/0x9a May 20 00:25:54 localhost kernel: [17640.343251] [] ? wait_for_common+0x31/0xec May 20 00:25:54 localhost kernel: [17640.343254] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:25:54 localhost kernel: [17640.343258] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:25:54 localhost kernel: [17640.343261] [] ? trace_hardirqs_on+0xb/0xd May 20 00:25:54 localhost kernel: [17640.343265] [] wait_for_common+0xa7/0xec May 20 00:25:54 localhost kernel: [17640.343269] [] ? default_wake_function+0x0/0xd May 20 00:25:54 localhost kernel: [17640.343273] [] wait_for_completion+0x12/0x14 May 20 00:25:54 localhost kernel: [17640.343276] [] flush_work+0xa1/0xb2 May 20 00:25:54 localhost kernel: [17640.343280] [] ? wq_barrier_func+0x0/0xd May 20 00:25:54 localhost kernel: [17640.343283] [] flush_delayed_work+0x40/0x43 May 20 00:25:54 localhost kernel: [17640.343287] [] tty_flush_to_ldisc+0xd/0xf May 20 00:25:54 localhost kernel: [17640.343290] [] n_tty_poll+0x54/0x127 May 20 00:25:54 localhost kernel: [17640.343294] [] ? n_tty_poll+0x0/0x127 May 20 00:25:54 localhost kernel: [17640.343297] [] tty_poll+0x4c/0x62 May 20 00:25:54 localhost kernel: [17640.343301] [] do_select+0x3a8/0x5cf May 20 00:25:54 localhost kernel: [17640.343305] [] ? __pollwait+0x0/0xac May 20 00:25:54 localhost kernel: [17640.343308] [] ? pollwake+0x0/0x63 May 20 00:25:54 localhost kernel: [17640.343311] [] ? pollwake+0x0/0x63 May 20 00:25:54 localhost kernel: [17640.343315] [] ? pollwake+0x0/0x63 May 20 00:25:54 localhost kernel: [17640.343318] [] ? pollwake+0x0/0x63 May 20 00:25:54 localhost kernel: [17640.343321] [] ? pollwake+0x0/0x63 May 20 00:25:54 localhost kernel: [17640.343324] [] ? trace_hardirqs_off+0xb/0xd May 20 00:25:54 localhost kernel: [17640.343328] [] ? _raw_spin_unlock_irqrestore+0x38/0x4c May 20 00:25:54 localhost kernel: [17640.343331] [] ? try_to_wake_up+0x31f/0x32a May 20 00:25:54 localhost kernel: [17640.343335] [] ? register_lock_class+0x17/0x2a4 May 20 00:25:54 localhost kernel: [17640.343338] [] ? mark_lock+0x1e/0x1ea May 20 00:25:54 localhost kernel: [17640.343341] [] ? mark_lock+0x1e/0x1ea May 20 00:25:54 localhost kernel: [17640.343345] [] ? mark_lock+0x1e/0x1ea May 20 00:25:54 localhost kernel: [17640.343348] [] ? __lock_acquire+0x374/0xbb7 May 20 00:25:54 localhost kernel: [17640.343352] [] ? lock_release_non_nested+0x84/0x1db May 20 00:25:54 localhost kernel: [17640.343357] [] ? might_fault+0x47/0x81 May 20 00:25:54 localhost kernel: [17640.343360] [] ? might_fault+0x47/0x81 May 20 00:25:54 localhost kernel: [17640.343364] [] ? might_fault+0x7c/0x81 May 20 00:25:54 localhost kernel: [17640.343368] [] ? _copy_from_user+0x2d/0x106 May 20 00:25:54 localhost kernel: [17640.343372] [] ? copy_from_user+0x8/0xa May 20 00:25:54 localhost kernel: [17640.343375] [] core_sys_select+0x14e/0x1ce May 20 00:25:54 localhost kernel: [17640.343379] [] ? might_fault+0x47/0x81 May 20 00:25:54 localhost kernel: [17640.343383] [] ? ktime_get_ts+0xd0/0xda May 20 00:25:54 localhost kernel: [17640.343386] [] sys_select+0x6e/0x8c May 20 00:25:54 localhost kernel: [17640.343389] [] syscall_call+0x7/0xb May 20 00:25:54 localhost kernel: [17640.343392] no locks held by X/3782. May 20 00:27:54 localhost kernel: [17760.343015] INFO: task events/1:10 blocked for more than 120 seconds. May 20 00:27:54 localhost kernel: [17760.343018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:27:54 localhost kernel: [17760.343021] events/1 D 00000fc0 0 10 2 0x00000000 May 20 00:27:54 localhost kernel: [17760.343025] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8 May 20 00:27:54 localhost kernel: [17760.343033] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001 May 20 00:27:54 localhost kernel: [17760.343039] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576 May 20 00:27:54 localhost kernel: [17760.343046] Call Trace: May 20 00:27:54 localhost kernel: [17760.343055] [] ? __lock_acquire+0xa67/0xbb7 May 20 00:27:54 localhost kernel: [17760.343059] [] ? __lock_acquire+0xaeb/0xbb7 May 20 00:27:54 localhost kernel: [17760.343064] [] schedule_timeout+0x16/0x9a May 20 00:27:54 localhost kernel: [17760.343068] [] ? mark_held_locks+0x43/0x5b May 20 00:27:54 localhost kernel: [17760.343071] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:27:54 localhost kernel: [17760.343075] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:27:54 localhost kernel: [17760.343078] [] ? trace_hardirqs_on+0xb/0xd May 20 00:27:54 localhost kernel: [17760.343081] [] __down_common+0x76/0xad May 20 00:27:54 localhost kernel: [17760.343084] [] __down+0x12/0x14 May 20 00:27:54 localhost kernel: [17760.343088] [] down+0x22/0x2f May 20 00:27:54 localhost kernel: [17760.343093] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 20 00:27:54 localhost kernel: [17760.343096] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 20 00:27:54 localhost kernel: [17760.343101] [] tty_ldisc_hangup+0x64/0x19c May 20 00:27:54 localhost kernel: [17760.343104] [] do_tty_hangup+0xe4/0x2d7 May 20 00:27:54 localhost kernel: [17760.343108] [] worker_thread+0x1a1/0x272 May 20 00:27:54 localhost kernel: [17760.343111] [] ? worker_thread+0x157/0x272 May 20 00:27:54 localhost kernel: [17760.343114] [] ? do_tty_hangup+0x0/0x2d7 May 20 00:27:54 localhost kernel: [17760.343118] [] ? autoremove_wake_function+0x0/0x33 May 20 00:27:54 localhost kernel: [17760.343121] [] ? worker_thread+0x0/0x272 May 20 00:27:54 localhost kernel: [17760.343124] [] kthread+0x61/0x66 May 20 00:27:54 localhost kernel: [17760.343134] [] ? kthread+0x0/0x66 May 20 00:27:54 localhost kernel: [17760.343139] [] kernel_thread_helper+0x6/0x1a May 20 00:27:54 localhost kernel: [17760.343142] 2 locks held by events/1/10: May 20 00:27:54 localhost kernel: [17760.343143] #0: (events){+.+.+.}, at: [] worker_thread+0x157/0x272 May 20 00:27:54 localhost kernel: [17760.343151] #1: ((&tty->hangup_work)#2){+.+...}, at: [] worker_thread+0x157/0x272 May 20 00:27:54 localhost kernel: [17760.343204] INFO: task X:3782 blocked for more than 120 seconds. May 20 00:27:54 localhost kernel: [17760.343206] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:27:54 localhost kernel: [17760.343208] X D 00000fc4 0 3782 3764 0x00400084 May 20 00:27:54 localhost kernel: [17760.343213] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230 May 20 00:27:54 localhost kernel: [17760.343222] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000 May 20 00:27:54 localhost kernel: [17760.343232] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230 May 20 00:27:54 localhost kernel: [17760.343241] Call Trace: May 20 00:27:54 localhost kernel: [17760.343246] [] schedule_timeout+0x16/0x9a May 20 00:27:54 localhost kernel: [17760.343249] [] ? wait_for_common+0x31/0xec May 20 00:27:54 localhost kernel: [17760.343253] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:27:54 localhost kernel: [17760.343257] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:27:54 localhost kernel: [17760.343260] [] ? trace_hardirqs_on+0xb/0xd May 20 00:27:54 localhost kernel: [17760.343264] [] wait_for_common+0xa7/0xec May 20 00:27:54 localhost kernel: [17760.343268] [] ? default_wake_function+0x0/0xd May 20 00:27:54 localhost kernel: [17760.343272] [] wait_for_completion+0x12/0x14 May 20 00:27:54 localhost kernel: [17760.343275] [] flush_work+0xa1/0xb2 May 20 00:27:54 localhost kernel: [17760.343278] [] ? wq_barrier_func+0x0/0xd May 20 00:27:54 localhost kernel: [17760.343282] [] flush_delayed_work+0x40/0x43 May 20 00:27:54 localhost kernel: [17760.343286] [] tty_flush_to_ldisc+0xd/0xf May 20 00:27:54 localhost kernel: [17760.343289] [] n_tty_poll+0x54/0x127 May 20 00:27:54 localhost kernel: [17760.343292] [] ? n_tty_poll+0x0/0x127 May 20 00:27:54 localhost kernel: [17760.343296] [] tty_poll+0x4c/0x62 May 20 00:27:54 localhost kernel: [17760.343300] [] do_select+0x3a8/0x5cf May 20 00:27:54 localhost kernel: [17760.343304] [] ? __pollwait+0x0/0xac May 20 00:27:54 localhost kernel: [17760.343307] [] ? pollwake+0x0/0x63 May 20 00:27:54 localhost kernel: [17760.343310] [] ? pollwake+0x0/0x63 May 20 00:27:54 localhost kernel: [17760.343313] [] ? pollwake+0x0/0x63 May 20 00:27:54 localhost kernel: [17760.343317] [] ? pollwake+0x0/0x63 May 20 00:27:54 localhost kernel: [17760.343320] [] ? pollwake+0x0/0x63 May 20 00:27:54 localhost kernel: [17760.343323] [] ? trace_hardirqs_off+0xb/0xd May 20 00:27:54 localhost kernel: [17760.343327] [] ? _raw_spin_unlock_irqrestore+0x38/0x4c May 20 00:27:54 localhost kernel: [17760.343330] [] ? try_to_wake_up+0x31f/0x32a May 20 00:27:54 localhost kernel: [17760.343334] [] ? register_lock_class+0x17/0x2a4 May 20 00:27:54 localhost kernel: [17760.343337] [] ? mark_lock+0x1e/0x1ea May 20 00:27:54 localhost kernel: [17760.343341] [] ? mark_lock+0x1e/0x1ea May 20 00:27:54 localhost kernel: [17760.343344] [] ? mark_lock+0x1e/0x1ea May 20 00:27:54 localhost kernel: [17760.343348] [] ? __lock_acquire+0x374/0xbb7 May 20 00:27:54 localhost kernel: [17760.343351] [] ? lock_release_non_nested+0x84/0x1db May 20 00:27:54 localhost kernel: [17760.343356] [] ? might_fault+0x47/0x81 May 20 00:27:54 localhost kernel: [17760.343360] [] ? might_fault+0x47/0x81 May 20 00:27:54 localhost kernel: [17760.343363] [] ? might_fault+0x7c/0x81 May 20 00:27:54 localhost kernel: [17760.343368] [] ? _copy_from_user+0x2d/0x106 May 20 00:27:54 localhost kernel: [17760.343372] [] ? copy_from_user+0x8/0xa May 20 00:27:54 localhost kernel: [17760.343375] [] core_sys_select+0x14e/0x1ce May 20 00:27:54 localhost kernel: [17760.343379] [] ? might_fault+0x47/0x81 May 20 00:27:54 localhost kernel: [17760.343383] [] ? ktime_get_ts+0xd0/0xda May 20 00:27:54 localhost kernel: [17760.343386] [] sys_select+0x6e/0x8c May 20 00:27:54 localhost kernel: [17760.343389] [] syscall_call+0x7/0xb May 20 00:27:54 localhost kernel: [17760.343392] no locks held by X/3782. May 20 00:29:54 localhost kernel: [17880.343017] INFO: task events/1:10 blocked for more than 120 seconds. May 20 00:29:54 localhost kernel: [17880.343020] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:29:54 localhost kernel: [17880.343023] events/1 D 00000fc0 0 10 2 0x00000000 May 20 00:29:54 localhost kernel: [17880.343028] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8 May 20 00:29:54 localhost kernel: [17880.343035] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001 May 20 00:29:54 localhost kernel: [17880.343041] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576 May 20 00:29:54 localhost kernel: [17880.343048] Call Trace: May 20 00:29:54 localhost kernel: [17880.343058] [] ? __lock_acquire+0xa67/0xbb7 May 20 00:29:54 localhost kernel: [17880.343061] [] ? __lock_acquire+0xaeb/0xbb7 May 20 00:29:54 localhost kernel: [17880.343067] [] schedule_timeout+0x16/0x9a May 20 00:29:54 localhost kernel: [17880.343071] [] ? mark_held_locks+0x43/0x5b May 20 00:29:54 localhost kernel: [17880.343074] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:29:54 localhost kernel: [17880.343077] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:29:54 localhost kernel: [17880.343081] [] ? trace_hardirqs_on+0xb/0xd May 20 00:29:54 localhost kernel: [17880.343084] [] __down_common+0x76/0xad May 20 00:29:54 localhost kernel: [17880.343087] [] __down+0x12/0x14 May 20 00:29:54 localhost kernel: [17880.343091] [] down+0x22/0x2f May 20 00:29:54 localhost kernel: [17880.343096] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 20 00:29:54 localhost kernel: [17880.343100] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 20 00:29:54 localhost kernel: [17880.343105] [] tty_ldisc_hangup+0x64/0x19c May 20 00:29:54 localhost kernel: [17880.343108] [] do_tty_hangup+0xe4/0x2d7 May 20 00:29:54 localhost kernel: [17880.343112] [] worker_thread+0x1a1/0x272 May 20 00:29:54 localhost kernel: [17880.343115] [] ? worker_thread+0x157/0x272 May 20 00:29:54 localhost kernel: [17880.343118] [] ? do_tty_hangup+0x0/0x2d7 May 20 00:29:54 localhost kernel: [17880.343122] [] ? autoremove_wake_function+0x0/0x33 May 20 00:29:54 localhost kernel: [17880.343125] [] ? worker_thread+0x0/0x272 May 20 00:29:54 localhost kernel: [17880.343136] [] kthread+0x61/0x66 May 20 00:29:54 localhost kernel: [17880.343140] [] ? kthread+0x0/0x66 May 20 00:29:54 localhost kernel: [17880.343144] [] kernel_thread_helper+0x6/0x1a May 20 00:29:54 localhost kernel: [17880.343147] 2 locks held by events/1/10: May 20 00:29:54 localhost kernel: [17880.343149] #0: (events){+.+.+.}, at: [] worker_thread+0x157/0x272 May 20 00:29:54 localhost kernel: [17880.343156] #1: ((&tty->hangup_work)#2){+.+...}, at: [] worker_thread+0x157/0x272 May 20 00:29:54 localhost kernel: [17880.343208] INFO: task X:3782 blocked for more than 120 seconds. May 20 00:29:54 localhost kernel: [17880.343210] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:29:54 localhost kernel: [17880.343213] X D 00000fc4 0 3782 3764 0x00400084 May 20 00:29:54 localhost kernel: [17880.343218] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230 May 20 00:29:54 localhost kernel: [17880.343227] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000 May 20 00:29:54 localhost kernel: [17880.343236] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230 May 20 00:29:54 localhost kernel: [17880.343245] Call Trace: May 20 00:29:54 localhost kernel: [17880.343250] [] schedule_timeout+0x16/0x9a May 20 00:29:54 localhost kernel: [17880.343254] [] ? wait_for_common+0x31/0xec May 20 00:29:54 localhost kernel: [17880.343257] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:29:54 localhost kernel: [17880.343261] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:29:54 localhost kernel: [17880.343264] [] ? trace_hardirqs_on+0xb/0xd May 20 00:29:54 localhost kernel: [17880.343268] [] wait_for_common+0xa7/0xec May 20 00:29:54 localhost kernel: [17880.343272] [] ? default_wake_function+0x0/0xd May 20 00:29:54 localhost kernel: [17880.343276] [] wait_for_completion+0x12/0x14 May 20 00:29:54 localhost kernel: [17880.343279] [] flush_work+0xa1/0xb2 May 20 00:29:54 localhost kernel: [17880.343282] [] ? wq_barrier_func+0x0/0xd May 20 00:29:54 localhost kernel: [17880.343286] [] flush_delayed_work+0x40/0x43 May 20 00:29:54 localhost kernel: [17880.343290] [] tty_flush_to_ldisc+0xd/0xf May 20 00:29:54 localhost kernel: [17880.343294] [] n_tty_poll+0x54/0x127 May 20 00:29:54 localhost kernel: [17880.343297] [] ? n_tty_poll+0x0/0x127 May 20 00:29:54 localhost kernel: [17880.343300] [] tty_poll+0x4c/0x62 May 20 00:29:54 localhost kernel: [17880.343304] [] do_select+0x3a8/0x5cf May 20 00:29:54 localhost kernel: [17880.343308] [] ? __pollwait+0x0/0xac May 20 00:29:54 localhost kernel: [17880.343312] [] ? pollwake+0x0/0x63 May 20 00:29:54 localhost kernel: [17880.343315] [] ? pollwake+0x0/0x63 May 20 00:29:54 localhost kernel: [17880.343318] [] ? pollwake+0x0/0x63 May 20 00:29:54 localhost kernel: [17880.343321] [] ? pollwake+0x0/0x63 May 20 00:29:54 localhost kernel: [17880.343324] [] ? pollwake+0x0/0x63 May 20 00:29:54 localhost kernel: [17880.343328] [] ? trace_hardirqs_off+0xb/0xd May 20 00:29:54 localhost kernel: [17880.343331] [] ? _raw_spin_unlock_irqrestore+0x38/0x4c May 20 00:29:54 localhost kernel: [17880.343335] [] ? try_to_wake_up+0x31f/0x32a May 20 00:29:54 localhost kernel: [17880.343338] [] ? register_lock_class+0x17/0x2a4 May 20 00:29:54 localhost kernel: [17880.343341] [] ? mark_lock+0x1e/0x1ea May 20 00:29:54 localhost kernel: [17880.343345] [] ? mark_lock+0x1e/0x1ea May 20 00:29:54 localhost kernel: [17880.343348] [] ? mark_lock+0x1e/0x1ea May 20 00:29:54 localhost kernel: [17880.343352] [] ? __lock_acquire+0x374/0xbb7 May 20 00:29:54 localhost kernel: [17880.343356] [] ? lock_release_non_nested+0x84/0x1db May 20 00:29:54 localhost kernel: [17880.343360] [] ? might_fault+0x47/0x81 May 20 00:29:54 localhost kernel: [17880.343364] [] ? might_fault+0x47/0x81 May 20 00:29:54 localhost kernel: [17880.343367] [] ? might_fault+0x7c/0x81 May 20 00:29:54 localhost kernel: [17880.343372] [] ? _copy_from_user+0x2d/0x106 May 20 00:29:54 localhost kernel: [17880.343376] [] ? copy_from_user+0x8/0xa May 20 00:29:54 localhost kernel: [17880.343379] [] core_sys_select+0x14e/0x1ce May 20 00:29:54 localhost kernel: [17880.343384] [] ? might_fault+0x47/0x81 May 20 00:29:54 localhost kernel: [17880.343387] [] ? ktime_get_ts+0xd0/0xda May 20 00:29:54 localhost kernel: [17880.343390] [] sys_select+0x6e/0x8c May 20 00:29:54 localhost kernel: [17880.343394] [] syscall_call+0x7/0xb May 20 00:29:54 localhost kernel: [17880.343396] no locks held by X/3782. May 20 00:31:54 localhost kernel: [18000.343016] INFO: task events/1:10 blocked for more than 120 seconds. May 20 00:31:54 localhost kernel: [18000.343019] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:31:54 localhost kernel: [18000.343022] events/1 D 00000fc0 0 10 2 0x00000000 May 20 00:31:54 localhost kernel: [18000.343027] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8 May 20 00:31:54 localhost kernel: [18000.343034] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001 May 20 00:31:54 localhost kernel: [18000.343041] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576 May 20 00:31:54 localhost kernel: [18000.343047] Call Trace: May 20 00:31:54 localhost kernel: [18000.343056] [] ? __lock_acquire+0xa67/0xbb7 May 20 00:31:54 localhost kernel: [18000.343060] [] ? __lock_acquire+0xaeb/0xbb7 May 20 00:31:54 localhost kernel: [18000.343066] [] schedule_timeout+0x16/0x9a May 20 00:31:54 localhost kernel: [18000.343069] [] ? mark_held_locks+0x43/0x5b May 20 00:31:54 localhost kernel: [18000.343073] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:31:54 localhost kernel: [18000.343076] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:31:54 localhost kernel: [18000.343079] [] ? trace_hardirqs_on+0xb/0xd May 20 00:31:54 localhost kernel: [18000.343082] [] __down_common+0x76/0xad May 20 00:31:54 localhost kernel: [18000.343085] [] __down+0x12/0x14 May 20 00:31:54 localhost kernel: [18000.343089] [] down+0x22/0x2f May 20 00:31:54 localhost kernel: [18000.343094] [] ppp_asynctty_close+0x4a/0x89 [ppp_async] May 20 00:31:54 localhost kernel: [18000.343098] [] ppp_asynctty_hangup+0x8/0xc [ppp_async] May 20 00:31:54 localhost kernel: [18000.343103] [] tty_ldisc_hangup+0x64/0x19c May 20 00:31:54 localhost kernel: [18000.343106] [] do_tty_hangup+0xe4/0x2d7 May 20 00:31:54 localhost kernel: [18000.343110] [] worker_thread+0x1a1/0x272 May 20 00:31:54 localhost kernel: [18000.343113] [] ? worker_thread+0x157/0x272 May 20 00:31:54 localhost kernel: [18000.343116] [] ? do_tty_hangup+0x0/0x2d7 May 20 00:31:54 localhost kernel: [18000.343120] [] ? autoremove_wake_function+0x0/0x33 May 20 00:31:54 localhost kernel: [18000.343123] [] ? worker_thread+0x0/0x272 May 20 00:31:54 localhost kernel: [18000.343134] [] kthread+0x61/0x66 May 20 00:31:54 localhost kernel: [18000.343137] [] ? kthread+0x0/0x66 May 20 00:31:54 localhost kernel: [18000.343142] [] kernel_thread_helper+0x6/0x1a May 20 00:31:54 localhost kernel: [18000.343145] 2 locks held by events/1/10: May 20 00:31:54 localhost kernel: [18000.343147] #0: (events){+.+.+.}, at: [] worker_thread+0x157/0x272 May 20 00:31:54 localhost kernel: [18000.343154] #1: ((&tty->hangup_work)#2){+.+...}, at: [] worker_thread+0x157/0x272 May 20 00:31:54 localhost kernel: [18000.343207] INFO: task X:3782 blocked for more than 120 seconds. May 20 00:31:54 localhost kernel: [18000.343209] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 20 00:31:54 localhost kernel: [18000.343212] X D 00000fc4 0 3782 3764 0x00400084 May 20 00:31:54 localhost kernel: [18000.343217] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230 May 20 00:31:54 localhost kernel: [18000.343226] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000 May 20 00:31:54 localhost kernel: [18000.343235] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230 May 20 00:31:54 localhost kernel: [18000.343245] Call Trace: May 20 00:31:54 localhost kernel: [18000.343249] [] schedule_timeout+0x16/0x9a May 20 00:31:54 localhost kernel: [18000.343253] [] ? wait_for_common+0x31/0xec May 20 00:31:54 localhost kernel: [18000.343256] [] ? _raw_spin_unlock_irq+0x22/0x2b May 20 00:31:54 localhost kernel: [18000.343260] [] ? trace_hardirqs_on_caller+0x10d/0x12e May 20 00:31:54 localhost kernel: [18000.343264] [] ? trace_hardirqs_on+0xb/0xd May 20 00:31:54 localhost kernel: [18000.343267] [] wait_for_common+0xa7/0xec May 20 00:31:54 localhost kernel: [18000.343272] [] ? default_wake_function+0x0/0xd May 20 00:31:54 localhost kernel: [18000.343275] [] wait_for_completion+0x12/0x14 May 20 00:31:54 localhost kernel: [18000.343279] [] flush_work+0xa1/0xb2 May 20 00:31:54 localhost kernel: [18000.343282] [] ? wq_barrier_func+0x0/0xd May 20 00:31:54 localhost kernel: [18000.343285] [] flush_delayed_work+0x40/0x43 May 20 00:31:54 localhost kernel: [18000.343289] [] tty_flush_to_ldisc+0xd/0xf May 20 00:31:54 localhost kernel: [18000.343293] [] n_tty_poll+0x54/0x127 May 20 00:31:54 localhost kernel: [18000.343296] [] ? n_tty_poll+0x0/0x127 May 20 00:31:54 localhost kernel: [18000.343299] [] tty_poll+0x4c/0x62 May 20 00:31:54 localhost kernel: [18000.343303] [] do_select+0x3a8/0x5cf May 20 00:31:54 localhost kernel: [18000.343307] [] ? __pollwait+0x0/0xac May 20 00:31:54 localhost kernel: [18000.343311] [] ? pollwake+0x0/0x63 May 20 00:31:54 localhost kernel: [18000.343314] [] ? pollwake+0x0/0x63 May 20 00:31:54 localhost kernel: [18000.343317] [] ? pollwake+0x0/0x63 May 20 00:31:54 localhost kernel: [18000.343320] [] ? pollwake+0x0/0x63 May 20 00:31:54 localhost kernel: [18000.343323] [] ? pollwake+0x0/0x63 May 20 00:31:54 localhost kernel: [18000.343327] [] ? trace_hardirqs_off+0xb/0xd May 20 00:31:54 localhost kernel: [18000.343330] [] ? _raw_spin_unlock_irqrestore+0x38/0x4c May 20 00:31:54 localhost kernel: [18000.343334] [] ? try_to_wake_up+0x31f/0x32a May 20 00:31:54 localhost kernel: [18000.343338] [] ? register_lock_class+0x17/0x2a4 May 20 00:31:54 localhost kernel: [18000.343341] [] ? mark_lock+0x1e/0x1ea May 20 00:31:54 localhost kernel: [18000.343344] [] ? mark_lock+0x1e/0x1ea May 20 00:31:54 localhost kernel: [18000.343348] [] ? mark_lock+0x1e/0x1ea May 20 00:31:54 localhost kernel: [18000.343351] [] ? __lock_acquire+0x374/0xbb7 May 20 00:31:54 localhost kernel: [18000.343355] [] ? lock_release_non_nested+0x84/0x1db May 20 00:31:54 localhost kernel: [18000.343360] [] ? might_fault+0x47/0x81 May 20 00:31:54 localhost kernel: [18000.343363] [] ? might_fault+0x47/0x81 May 20 00:31:54 localhost kernel: [18000.343367] [] ? might_fault+0x7c/0x81 May 20 00:31:54 localhost kernel: [18000.343372] [] ? _copy_from_user+0x2d/0x106 May 20 00:31:54 localhost kernel: [18000.343375] [] ? copy_from_user+0x8/0xa May 20 00:31:54 localhost kernel: [18000.343379] [] core_sys_select+0x14e/0x1ce May 20 00:31:54 localhost kernel: [18000.343383] [] ? might_fault+0x47/0x81 May 20 00:31:54 localhost kernel: [18000.343386] [] ? ktime_get_ts+0xd0/0xda May 20 00:31:54 localhost kernel: [18000.343390] [] sys_select+0x6e/0x8c May 20 00:31:54 localhost kernel: [18000.343393] [] syscall_call+0x7/0xb May 20 00:31:54 localhost kernel: [18000.343396] no locks held by X/3782. Regards Richard